Hamilton Harbour Remedial Action Plan

Hamilton Harbour Remedial Action Plan
Name	Hamilton Harbour Remedial Action Plan
Location	Hamilton, Ontario, Lake Ontario, Ancaster Creek, Cootes Paradise, Burlington Bay
Established	1987
Area	Hamilton Harbour watershed
Managing agency	Environment and Climate Change Canada, Ontario Ministry of the Environment, Conservation and Parks

Contents

Hamilton Harbour Remedial Action Plan

The Hamilton Harbour Remedial Action Plan is a coordinated restoration initiative for Hamilton Harbour (Ontario), founded under the Great Lakes Water Quality Agreement and involving stakeholders from City of Hamilton, Region of Waterloo, Niagara Peninsula Conservation Authority, Environment and Climate Change Canada, and the International Joint Commission. The plan addresses legacy contamination from industrial sites such as Steel Company of Canada and Dofasco and habitat loss in wetlands like Cootes Paradise, integrating science from institutions including the Royal Ontario Museum, McMaster University, and the Canadian Wildlife Service.

Overview and History

The initiative originated in 1987 following assessments by International Joint Commission and Environment Canada that listed the harbour as an Area of Concern under the Great Lakes Water Quality Agreement; subsequent milestones involved cooperative action by City of Hamilton, Ontario Ministry of the Environment, Conservation and Parks, Hamilton Conservation Authority, Canadian Pacific Railway, and local industry. Early remediation responded to contamination identified at sites tied to Hamilton Harbour Commissioners, National Steel Car, Stelco, and legacy discharges affecting tributaries like Red Hill Creek and Cootes Paradise Creek. Major historical projects drew on expertise from University of Toronto, Lakehead University, Ontario Ministry of Natural Resources and Forestry, and programs like Great Lakes Fisheries Commission initiatives to rehabilitate the harbour's fish populations including Lake Ontario Atlantic salmon and walleye.

Persistent pollutants including polychlorinated biphenyls, dioxins, polycyclic aromatic hydrocarbons, and heavy metals such as mercury, lead, and cadmium contaminated sediments from industrial operations including Stelco and Dofasco and urban runoff from Ancaster, Burlington, and Grimsby. Habitat degradation affected wetlands like Cootes Paradise and riparian corridors along Spencer Creek and Tiffany Creek, reducing populations of species such as great blue heron, lake sturgeon, migratory waterfowl, and the piping plover. Nutrient loading from sewage treatment infrastructure tied to Hamilton Harbour Remedial Action Plan tributaries, stormwater managed by Hamilton Conservation Authority, and agricultural inputs from Niagara Peninsula produced eutrophication and harmful algal blooms that impaired aquatic recreation and commercial fishing impacted by Department of Fisheries and Oceans advisories. Loss of connectivity due to infrastructure like QEW and Red Hill Valley Parkway altered sediment transport and fish passage, exacerbating impairments catalogued under the Great Lakes Water Quality Agreement's beneficial use impairments framework.

Primary goals include delisting the harbour as an Area of Concern by restoring beneficial uses identified by the International Joint Commission and meeting objectives set by Environment and Climate Change Canada and the Ontario Ministry of the Environment, Conservation and Parks. Specific objectives target sediment remediation to reduce concentrations of PCBs and dioxins, habitat restoration in wetlands such as Cootes Paradise and Burlington Beach, and recovery of species managed by Ontario Ministry of Natural Resources and Forestry and Fisheries and Oceans Canada. The plan aligns with regional strategies like the Niagara Escarpment Commission conservation priorities, urban watershed planning from the City of Hamilton, and broader Great Lakes targets under the Great Lakes Protection Act (Ontario) and collaborative programs with the International Joint Commission.

Remediation actions have included dredging contaminated sediments in harbour basins conducted with oversight from Environment and Climate Change Canada and engineered capping projects informed by research from McMaster University and University of Waterloo. Habitat projects restored marshes in Cootes Paradise using techniques developed with Royal Botanical Gardens and Hamilton Conservation Authority partners, while stormwater management upgrades at municipal facilities coordinated with Halton Region and Burlington reduced nutrient loads. Contaminated site cleanups followed provincial frameworks such as the Environmental Protection Act (Ontario), involving responsible parties including Stelco, Dofasco, and industrial landowners. Fish and wildlife recovery actions coordinated with Fisheries and Oceans Canada, Canadian Wildlife Service, and NGOs like Ducks Unlimited Canada reintroduced native vegetation and improved fish passage at barriers including culverts associated with Red Hill Creek restoration projects.

Long-term monitoring programs involve sediment chemistry monitoring by Environment and Climate Change Canada, biological assessments by Fisheries and Oceans Canada and academic partners at McMaster University, and water quality surveillance by the Ontario Ministry of the Environment, Conservation and Parks. Adaptive management uses data feeds from monitoring stations in Hamilton Harbour (Ontario), habitat surveys in Cootes Paradise, and contaminant trend analyses reported to the International Joint Commission and incorporated into revisions of the remedial plan. Performance indicators track reductions in PCB and mercury burdens, recovery metrics for species such as lake sturgeon and American black duck, and compliance with standards stemming from the Great Lakes Water Quality Agreement and provincial guidance.

Governance is a multi-jurisdictional partnership including City of Hamilton, Environment and Climate Change Canada, Ontario Ministry of the Environment, Conservation and Parks, Hamilton Conservation Authority, industry stakeholders like Stelco and Dofasco, and NGOs such as Royal Botanical Gardens and Ducks Unlimited Canada engaging Indigenous partners including Six Nations of the Grand River and Mississauga First Nation. Public advisory committees and technical working groups draw representatives from academia at McMaster University and University of Toronto, provincial agencies like the Ontario Ministry of Natural Resources and Forestry, and federal bodies such as Fisheries and Oceans Canada to guide planning, funding, and implementation. Funding and policy instruments have involved mechanisms under the Great Lakes Protection Initiative, provincial environmental funding programs, and corporate remediation commitments enforced through instruments such as the Environmental Protection Act (Ontario) and coordinated reporting to the International Joint Commission.